WASHINGTON, Feb. 1 — The daughter of former Ukrainian Prime Minister Yulia Tymoshenko says her mother is being tortured in prison, The Washington Post reported Wednesday.

Tymoshenko is serving a 7-year sentence on charges of abuse of office in a case the West has condemned as politically motivated.

Daughter Eugenia Tymoshenko told the Senate Foreign Relations Committee on Wednesday that prison authorities have intentionally caused her mother sleep deprivation.